/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 *
 * This file is part of MjSip (http://www.mjsip.org)
 *
 * MjSip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MjSip is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.sip.header;


import org.zoolu.tools.Parser;


/** SIP Header Call-ID.
 * The Call-ID header field acts as a unique identifier to group
 * together a series of messages.  It MUST be the same for all requests
 * and responses sent by either MyUA in a dialog.  It SHOULD be the same
 * in each registration from a MyUA.
 * <BR> In a new request created by a UAC outside of any dialog, the Call-ID
 * header field MUST be selected by the UAC as a globally unique
 * identifier over space and time unless overridden by method-specific
 * behavior.
 * <BR> Use of cryptographically random identifiers in the
 * generation of Call-IDs is RECOMMENDED.  Implementations MAY use the
 * form "localid@host".  Call-IDs are case-sensitive and are simply
 * compared byte-by-byte.
 */
public class CallIdHeader extends Header
{
    /** Creates a CallIdHeader */
    //public CallIdHeader()
    //{  super(SipHeaders.Call_ID);
    //}

    /** Creates a CallIdHeader with value <i>hvalue</i> */
    public CallIdHeader(String hvalue)
    {  super(SipHeaders.Call_ID,hvalue);
    }

    /** Creates a new CallIdHeader equal to CallIdHeader <i>hd</i> */
    public CallIdHeader(Header hd)
    {  super(hd);
    }

    /** Gets Call-Id of CallIdHeader */
    public String getCallId()
    {  return (new Parser(value)).getString();
    }

    /** Sets Call-Id of CallIdHeader */
    public void setCallId(String callId)
    {  value=callId;
    }
}
